Improvement in motors



UNITED STATES PATENT OFFICE.

JOSEPH PLATTENBURG, OF ALLEGHENY, PENNSYLVANIA.

IMPROVEMENT IN MOTORS.

Specification forming part of Letters Patent No. 212,977, dated March 4, 1879; application filed December 31, 1878.

To all whom it may concern Be it known that I, JosErH PLATTENBURG, of Allegheny city, in the county of Allegheny and State of Pennsylvania, have invented a new and Improved Motor, of which the following is a specification:

The object of my invention is to furnish a motor adapted for use in driving machinery, and especially for pumping and other purposes where a steam-engine would be too expensive.

In carrying out the said object I construct an apparatus whereby hand-power is utilized to stretch a vulcanized rubber belt of suit-able size and tension, and wind the belt in its stretched condition on a drum. The power is then taken as required from the drum by suitable mechanism, and regulated andcontrolled bya weighted lever to render it uniform, and the tension of the belt in winding is regulated by pressure-rollers.

The apparatus will be described in detail in connection with the accompanying drawings, wherein- Figure 1 is a side elevation of my apparatus as adapted for pumping purposes. Fig. 2 is a plan view. Fig. 3 is a sectional elevation on line :20 a; of Fig. 2. Fig. 4 is a view of the ratchet that connects the drum to its shaft.

Similar letters of reference indicate corresponding parts.

The operative parts of the machine are mounted upon a bed or stand, (0. Upon a shaft that is fitted in suitable bearings on bed a is a loose drum, 1), having flanges, as shown, and fitted at opposite sides outside the flanges with ratchet-wheels b c, the teeth of which stand in opposite directions. A pawl, b engages with the teeth of ratchet b to cause the drum b and shaft to turn together in one direction and permit independent movement of the drum in the other direction. The ratchet c is engaged by the dog or pawl c, that is hung on lever d, which lever is hung loosely on the shaft of drum I). One end of a vulcanized-rubber belt, 6, is connected to the drum b, and the other end extends to and is connected firmly to the end of frame a. At an intermediate point between the two connections the belt passes over a friction-roller, j, which is journaled in the standards g 9, that rise from bed to. These standards g g extend above roller f, and are slotted to receive the journals of a pressure-roller, h, which rests upon belt 0, above roller f, and is capable of vertical movementin the slots of the standards g g. The journals of roller 76 project outside the standards g, and upon them rest the forked arms it, that are connected to a lever, k, whereby more or less pressure may be applied to roller h. The lever is is fulcrumed in a standard, It, and suitable press ure can be obtained by weights or springs applied upon its moving end.

Keyed to the shaftof drumb is a large gearwheel, Z, which meshes with a pinion on an intermediate shaft, m, carrying a gear-wheel, which meshes with a pinion on the drivingshaft a, which shaft n will thereby have a rapid rotation compared with drum 1), and from which the power is taken for the work to be done.

I have shown a pulley, a, on shaft n, belted to a pulley on a shaft, 0, that has keyed upon one end a crank-wheel, p, and upon its opposite end a crank, q.

'r is the walking beam of an oil-well pump of usual character, which should be weighted to balance the sucker-rodsof the pump, but when used for pumping water would not need to be balanced. This beam is operated by a pitman, r, from wheel h. Upon the side of frame a is fulcrumed a lever, s, the upper and short arm of which is connected by a rod, t, with crank g on shaft 0, and upon its lower end is a cross-bar, t, that carries upon its outer end weights a. This lever 8 forms a weighted pendulum, that is vibrated by the revolution of shaft 0. to shaft 0, but in case that shaft was not used can be connected in the same manner with sh aft n.

'0 is a brake, fitted to act on pulley n by movement of lever o to check or stop the apparatus.

The operation of the above-described parts is as follows: To stretch belt 0 and wind it upon drum 1), the lever d is first depressed to its lowest point, and pawl o engaged with ratchet 0. Then by raising lever 61 the drum is turned, which winds belt 0 and stretches it It is shown connected at the same time. The tension at which the belt is wound is regulated by the pressure of roller h on the belt, the length of belt between I) and h being first stretched and wound until it is of sufficient tension to overcome the pressure of h, and then the remaining part of the belt will be drawn beneath 71, and taken up by the drum as fast as stretched.

After the belt is wound to the desired extent the pawl 0 should be disengaged, and the tension of the belt will act to turn the drum, and by the gearing described the beam 0 will be operated. The weighted lever s will act as a governor upon the apparatus to render the ac tion uniform and prevent jerking action of the cranks.

W'hen the apparatus is used in connection with oiLwells, it is essential that some means be provided for raising the sucker-rods from the wells. For this purpose I attach the shaft 20, one end of which is fitted in a side frame, 10, and the inner end is journaled at the end of a lever, 3 that is fulcrumed at 3 on frame a. The inner end of shaft to carries africtionwheel, 10*, which, by depressing lever y, can be brought in contact with pulley n, and shaft 10 thereby rotated. The shaft to should carry a drum for a rope passing over a sheave at the top of the derrick and connected to the suckerrods; and for convenience of operating lever 3 a slide, y, is connected therewith, its opposite end projecting above frame to adjacent to where the operator will stand in using the apparatus.

The power developed by the apparatus described will be in proportion to the size of the belt 0 and the extent to which it is stretched. By making the lever (Z of suitable proportions, and, if necessary, by the use of gearing intermediate to the lever and drum, immense power can be stored up in the drum by operating the lever a short time and gradually expended in the manner described.

Having thus described my invention, I claim. as new and desire to secure by Letters Patent 1. The combination herein described of the drum, the pawls and ratchets, the lever d, the elastic belt 0, and ,the rollsf h, all arranged as shown and described.

2. The combination, with the drum Z), elastic belt 6, lever d, and dog 0, of the frictionroller f, pressure-roller h, arms '6, and lever 7c, substantially as and for the purposes set forth.

3. The combination, with the drum 1), elastic belt 6, and means, substantially as described, for stretchingand winding the belt upon the drum, of the weighted lever .5, connected to a crank on the secondary shaft, 0, substantially as and for the purposes specified.

4. The combination, with the drum 1), elastic belt 0, and means, substantially as described, for stretching and winding the belt upon the drum, of the crank-shaft 0, operated by intermediate gearing from drum 1), the beam 7', and rod 1", substantially as and for the purposes set forth.

5. The combination, with the drum I), elastic belt 6, lever (7, dog 0, shaft n, and intermediate gearing, the whole constituting a motor, operating as described, of the drum-shaft 'w, friction-wheel 10 and lever y, substantially as described and shown, and for the purposes specified.

JOSEPH PLATTENBURG.

Witnesses:

GEO. D. WALKER, O. SEDGW'IOK. 

